#180F4F#180F4F

#180F4F is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.4% C 0.110 H 280.0°. Best body text is #FFFFFF at 17.21:1 contrast (WCAG AA passes).

Color values

HEX	#180F4F
RGB	rgb(24, 15, 79)
HSL	hsl(248, 68%, 18%)
HSV	hsv(248, 81%, 31%)
CMYK	cmyk(69.6%, 81%, 0%, 69%)
CIE-LAB	lab(9.80, 25.87, -37.52)
CIE-LCH	lch(9.80, 45.57, 304.58°)
OKLab	oklab(23.37% 0.0191 -0.1083)
OKLCH	oklch(23.37% 0.11 280)
XYZ	xyz(1.9583, 1.1002, 7.5048)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#180F4F #464F0F

analogous

#0F264F #180F4F #380F4F

triadic

#180F4F #4F180F #0F4F18

tetradic

#180F4F #4F0F26 #464F0F #0F4F38

square

#180F4F #4F0F26 #464F0F #0F4F38

split-complementary

#180F4F #4F380F #264F0F

monochromatic

#08051A #08051C #180F4F #281982 #3723B6

Accessibility & contrast

On white

17.21

#180F4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#180F4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #180F4F

17.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##180F4F	#FFFFFF	#000000	##FFFFFF
##180F4F	1.00	17.21	1.22	17.21
#FFFFFF	17.21	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D51

Deuteranopia (green-blind)

#00194E

Tritanopia (blue-blind)

#00212E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #180f4f;
/* rgb */ color: rgb(24, 15, 79);
/* oklch */ color: oklch(23.4% 0.110 280.0);

Tailwind

colors: {
  custom: {
    50: '#5e4e81',
    500: '#180f4f',
    950: '#000000',
  },
}

SCSS

$custom: #180f4f;
$custom-light: #5e4e81;
$custom-dark: #000000;

JSON

{
  "hex": "#180f4f",
  "rgb": {
    "r": 24,
    "g": 15,
    "b": 79
  },
  "hsl": {
    "h": 248.438,
    "s": 68.085,
    "l": 18.431
  },
  "oklch": {
    "l": 0.23371,
    "c": 0.10995,
    "h": 280
  },
  "luminance": 0.011
}

Semantic roles & 50–950 ramp

primary

#180F4F

secondary

#7D8931

accent

#EB3DD2

background

#F5F4F7

surface

#EAE7EE

border

#C6C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #180F4F

Body copy rendered with the generated semantic roles for this colour.

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